Low temperature delayed recombination decay in scintillating garnets

E. Mihokova; V. Babin; K. Bartosiewicz; L.S. Schulman; V. Cuba; M. Kucera; M. Nikl

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Low temperature delayed recombination decay in scintillating garnets

机译：闪烁石榴石的低温延迟重组衰变

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摘要

We study the temperature dependence of delayed recombination decay intensity in a variety of scintillating crystals based on garnet hosts in a wide temperature range 8-500 K. Previous work on several scintillating materials based on silicate hosts showed nonzero constant signal from very low temperatures up to about 120 K. This observation supported a previously suggested hypothesis on low temperature losses of fast scintillation light due to quantum tunneling between the activator and nearby traps. In garnets, the subject of the present article, we observe practically constant signal in the entire monitored temperature range. We thus further test and confirm the quantum tunneling hypothesis in a different class of scintillating materials. We also show that there is no thermal ionization of the activator's excited state in all materials studied, well above room temperature.

机译：我们研究了在8-500 K的宽温度范围内，各种基于石榴石基质的闪烁晶体的延迟复合衰变强度的温度依赖性。先前基于硅酸盐基质的几种闪烁材料的先前研究显示，从非常低的温度到大约120K。这一观察结果支持了先前提出的关于快速闪烁光的低温损失的假设，该假设是由于活化剂和附近陷阱之间的量子隧穿引起的。在石榴石（本文的主题）中，我们在整个监控温度范围内观察到几乎恒定的信号。因此，我们进一步测试并确认了另一类闪烁材料中的量子隧穿假设。我们还表明，在所有研究的材料中（远高于室温）都没有激活剂激发态的热电离。

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来源
《Optical Materials》 |2015年第2期|127-131|共5页
作者
E. Mihokova; V. Babin; K. Bartosiewicz; L.S. Schulman; V. Cuba; M. Kucera; M. Nikl;
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作者单位

Institute of Physics ASCR v.v.i. Cukrovarnicka 10 162 53 Prague Czech Republic;

Physics Department Clarkson University Potsdam NY 13699-5820 United States;

Czech Technical University FNSPE Brehova 7 115 19 Prague Czech Republic;

Charles University Faculty of Math. and Physics Ke Karlovu 5 121 16 Prague Czech Republic;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Luminescence; Garnets; Scintillator; Tunneling;

机译：发光;石榴石;闪烁体挖洞;

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1. Low temperature delayed recombination decay in scintillating garnets [J] . E. Mihokova, V. Babin, K. Bartosiewicz, Optical Materials . 2015,第feba期

机译：闪烁石榴石的低温延迟重组衰变
2. Low Temperature Delayed Recombination Decay in Complex Oxide Scintillating Crystals [J] . IEEE Transactions on Nuclear Science . 2014,第1aPart2期

机译：复合氧化物闪烁晶体的低温延迟复合衰变
3. Quantum tunneling and low temperature delayed recombination in scintillating materials [J] . Mihóková E., Schulman L.S., Jary V., Chemical Physics Letters . 2013,第Null期

机译：闪烁材料中的量子隧穿和低温延迟复合
4. Stabilizing Scintillation Detector Systems: Determination of the Scintillator Temperature Exploiting the Temperature Dependence of the Light Pulse Decay Time [C] . Guntram Pausch, Jurgen Stein, Nikolai Teofilov IEEE Nuclear Science Symposium . 2004

机译：稳定闪烁探测器系统：测定闪烁体温度利用光脉冲衰减时间的温度依赖性
5. LOW TEMPERATURE ADSORPTION AND GAMMA SCINTILLATION SPECTROMETRY FOR MEASURING ARGON-41. [D] . BEVIS, HERBERT ANDERSON. 1963

机译：低温吸附和伽玛闪烁光谱法测定ARGON-41。
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机译：长期暴露于低乙烯和储存温度下会延迟花萼衰老并保持 Afourer普通话和脐橙的品质
7. Synthesis of high-performance magnetic garnet materials and garnet-bismuth oxide nanocomposites using physical vapor deposition followed by high-temperature crystallization [O] . Nur E Alam, Mohammad, Vasiliev, Mikhail, Alameh, Kamal, 2011

机译：物理气相沉积然后高温结晶合成高性能磁性石榴石材料和石榴石-氧化铋纳米复合材料

Low temperature delayed recombination decay in scintillating garnets

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